Thank you for choosing BUIEJDOG Solar Powered Bluetooth Earphone. We are a long-term R&D team on vehicle and found that there are no real vehicle-mounted Earphones in the market, which push us to design such an Earphones to all drivers in the world. How to use? Please tear off the 3M glue and light membrane - And then mounted in the best position you like in the windshield, Please be sure don't mounted in the front Black Triangle Area. Technical specification: For the bluetooth earphone Bluetooth Specification: V4.0 Transmission Distance: 30ftTransmission power: class2 Wireless Frequency: 2.4-2.48GHZ Playback Time: Up to 4 Hours Standby Time: 90h operating voltage: 3.7VCharging Time: 1-2 HoursBattery: Lithium-ion Polymer 40mAhDimensions: 22*16*25MM Weight: 8GFor the solar caseOutput voltage: 5VOutput current: ≤100MADimensions: 75*40*25MMWeight : 25GBattery: Lithium-ion Polymer 400mAhStandby Time: 2000h Q & A and More Details1: Multiple connection pairs failed? Too many Bluetooth devices around, and please close them and then connect it. 2: Low voice, distortion and staccato? - Proper adjust the Bluetooth playback device(such as phones) to the right level. - Low power need to charge. - Beyond the transmission Distance or there is obstacles between Bluetooth and devices. The battery in the case can support headset charging 5-7 times, so even in the rainy days do not have to worry about no electricity. Note: If you don't use the earphone for a long time or encounter consecutive rainy days, and please use the USB cable to charge the case, the red light is on whiling charge and off when if full. What's Included?1 x Earphone1 x Solar Charging Module3 x Ear Tips1 x Mini USB cable1 x Use Manual
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